Throttle valve for internal combustion engines



THROTTLE VALVE FOR INTERNAL COMBUSTION ENGINES Filed Oct. 27, 1933 2 SheGtS-Sheet 1 mill I 1 7 Z0 l m mm I 7777-4;

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THROTTLE VALVE FOR INTERNAL COMBUSTION ENGINES Filed Oct. 27, 1953 2 Sheets-Sheet 2 IIILU] III] [Hill R n mM WM N e R E 0 V 6 T R M J .w W a 0 L y ,B

Patented Apr. 23, 1935 1,998,886

UNHTED STATES PATENT OFFICE THROTTLE VALVE FOR INTERNAL COIWBUSTION ENGINES Louis J. Scheid, Kalamazoo, Mich.

Application October 2'7, 1933, Serial No. 695,426

13 Claims. (01. 251-11) The main objects of this invention are: ventionally illustrated, the carburetion being of First, to provide a throttle valve for internal the so-called down-draft type. combustion engines which is not only effective as My improved throttle valve comprises a tubua throttle valve but is highly effective in mixing lar casing 6 which is designed to be interposed the air and carbureting fuel passing the valve, between the carburetor and the manifold. The and even distribution of the gas. device is preferably cylindrical, as illustrated, and Second, to provide a throttle valve comprising provided with an annular shoulder I and with a plurality of leaves operatively connected for Wall bores 8 constituting bearings and located simultaneous actuation so that when partially above the shoulder. These bearings 8 are disopened, they present a propeller disposition of posed in the same transverse or horizontal plane leaves whereby a swirling motion is imparted to and are spaced 90 apart. A support 9 is disthe fluid, the pitch of the blades being varied in posed centrally or in line with the longitudinal proportion to the opening and closing of the axis of the casing and is provided with bearings valve, and the parts being arranged so that when l8 aligned with the wall bearings 8. To facilitate fully open, a minimum of obstruction is presented. assembly, the support is provided with a bearing Third, to provide a throttle valve having the cap llheldin place by the screw l2. Cross pieces above desirable features and characteristics which I3 are provided, these supporting the member 9 is simple and durable in its parts and highly from the wall of the casing. A gear ring I4 is efficient in operation. mounted on the shoulder for rotative movement Objects relating to details and economies of about the casing. Pinion gears 15 are journaled my invention will appear from the description to in the wall bearings 8 in meshing relation with follow. The invention is defined and pointed out the annular gear 14. in the claims. The complementary segmental valve plates or A structure which is a preferred embodiment leaves It are provided with spindles l1 journaled of my invention is illustrated in the accompanyin the bearings of the central support and coning drawings, in which: nected to the pinion gears for rotation therewith.

Fig. 1 is a fragmentary side elevation of parts The spindles are disposed in the approximate lonof an internal combustion engine showing my imgitudinal centers of the valve leaves and the valve proved throttle valve in operative relation thereleaves are provided with overlapping portions [8, to, the various parts being shown mainly in conthe valve leaves being shouldered, as best shown ventional form. in Fig. 5, so that when the leaves are closed, one Fig. 2 is an enlarged transverse section on line end of each leaf overlies one end of the coactin 2-2 of Fig. 3, the parts being shown in full lines leaves whose axes are at an angle thereto and for convenience in illustratiom underlie the other. When the valve is opened or Fig. 3 is a side elevation with a portion of the part ally p n these valve l v assume n 3d casing broken away and in longitudinal section. Clined position, h like the blades of a Propeller Fig. 4 is a View mainly in longitudinal section and act to impart a swirling and effective mixing on line l4 of Fig. 2. motion to the air and fuel passing from the carbu- Fig. 5 is a fragmentary view sectioned o lin retor to the manifold, this resulting in a very thor- 5 '-i of Fig. 2. I ough agitation and carburetion of the air and Fig. 6 is a view partially in longitudinal section c ively prevent the Collefition fuel d with the valve open. d s on t valve- Fig. 7 is a side elevation of a modified form or one of t pinion gears is Provided with an arm embodiment f my invention l9 to which the end of the throttle control N is Fig 8 is a perspective View mainlyin 1Ongitudi connected so that by manipulation of the throttle, e nal section of the modification shown in Fig. '7. the rmg gear rotated an of the valve leaves Fig. 9 is a perspective view partially in longiare it m umson to the extent when tudinal section of another embodiment or adaptathe valve 15 fully Opened a mlmmum of obstruction of my invention tion is presented to the passage of fluid thereto.

Referring to embodim t t t d Throttle valves of the commonly used type, 1 f 1 us F m the so-called' butterfly type, serve, when the enrigs. l to fi inclusive of the drawings, I indicates gine is Operated at low Speeds and especiauy in pa of an Internal combustlfm engme, 2 a manistarting, to collect or baffle the gasoline so that fold. 3 a Carburetor having an ake indicated it does noteifectively mix with the air anddrips at and 5 an filter- These P t ar al from. the valve. This butterfly type of valve also lib results in an uneven distribution to the cylinders. This disadvantage is eifectively overcome in my improved valve because the arrangement of the leaves is such that a very tho-rough agitation results and a wiping swirling action of air is set up across the valve blades or leaves, this being violent at low speeds and varying with the speed commonly resulting with the degree of opening of the throttle.

Referring to Figs. 7 and 8 of the drawings, there is illustrated a modification of my throttle valve wherein the control ring ii is provided with radial pins 22 spaced 90 apart. The spindles23 of the valve leaves are journaled to the wall bores 25 and have levers 25 at their outer ends provided with slots receiving the pins 22 sothat when the control ring is rotated the valve leaves are turned in unison and to the same angular extent.

In the modification, the leaves are provided with offset flanges 23 which are adapted to overlap the edges of the adjacent leaves when they are in closed position. The control ring 2! is adapted to be rotated by the throttle wire 2a which is connected to oneof the pins 22 by of the coupling member Bil. Otherwise, the valve of the modification is substantially similar in construction and operation to the preferred embodiment of my invention.

In the modification illustrated by Fig. '9, the case 31 is provided with diametrically opposed bores in which are journaled the outer end of shaft 32 and the sleeve 33, the shaft extending through the sleeve for rotary movement therein. The shaft and sleeve are provided with semi-circular vanes or leaves as and 35 which are adapted to be turned in opposite directions as indicated, the leavesibeing provided with offset flanges 35, 35 for overlapping the corresponding edge of the other leaf when they are in closed position. The leaves are operated by means of levers 3'! and 38 which are connected respectively 'to the shaft and sleeve, the free ends of the levers being connected to the control member 39 by the knuckle 4B and links :42 and 63. The arrangement is such that when the control member '39 is reciprocated the valve leaves 34 and 35 are turned in opposite directions to open and close the valve and when partially open impart a spiral or swirling motion to the fluid traversing the case 3 l.

I have illustrated and described my improvements in embodiments which I have found very practical. I have not attempted to illustrate or describe other embodiments or adaptations, as it is believed this disclosure will enable .those skilled in the art to embody or adapt my improvements as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A throttle valve for internal combustion engines comprising a tubular casing adapted to be interposed between the carburetor and manifold of the engine, a plurality of coacting segmental valve leaves provided with supporting spindles journaled in said casing and disposed radially and at 90 angular relation to each other and in the same transverse plane, the spindles being disposed substantially at the radial centers of the valve leaves so that when thevalve leaves are closed their ends are in overlapping relation, the end portions of the valve leaves being offset relative to their pivots and shouldered to receive the lapping portions of the coacting valve leaves. and means for simultaneously rotating the spindles to open and close the valve leaves.

2. A throttle valve for internal combustion engines comprising a tubular casing adapted to be interposed between the carburetor and manifold of the engine, a plurality of coacting segmental valve leaves provided with supporting spindles journaled in said casing and disposed radially and at 90 angular relation to each other and in the same transverse plane, the spindles being disposed substantially at the radial centers of the valve leaves so that when the valve leaves are closed their ends are in overlapping relation, and means for simultaneously rotating the spindles to open and close the valve leaves.

3. .A throttle valve for internal combustion engines comprising a tubular casing adapted to be interposed between the carburetor and manifold of the engine, more than two coacting segmental valve leaves provided with radially disposed supporting spindles, the spindles being disposed in substantially the radial centers of the valve leaves so that when the valve leaves are closed their ends are in overlapping relation, and means for simultaneously rotating the spindles to open and {I close the valve leaves.

4. A throttle valve for internal combustion engines comprising a tubular casing adapted to be interposed between the carburetor and manifold of the engine, co-acting segmental valve leaves provided with supporting spindles journaled in said casing and disposed radially and at 90 angular relation to each other and in the same transverse plane, the spindles being disposed in substantially the radial centers of the valve leaves so that when th valve leaves are closed their ends arein overlapping relation, the end portions of the valve leaves being offset to receive the lapping portions of the coacting valve leaves, and means for simultaneously rotating the spindles to open and close the valve leaves.

5. A throttle valve for internal combustion engines comprising a tubular casing adapted to be interposed between the carburetor and manifold of the engine, coasting segmental valve leaves provided with supporting spindles journaled in said casing and disposed radially and at 90 angular relation to each other and in the same transverse plane, the spindles being disposed in substantially the radial centers of the valve leaves so that when the valve leaves are closed their ends are in overlapping relation, and means for simultaneously rotating the spindles to open and close the valve leaves.

6. A throttle valve for internal combustion engines comprising a tubular casing adapted to be interposed between the carburetor and manifold of the engine, coacting segmental valve leaves provided with radial supporting spindles arranged so that when the valve leaves are closed their ends are in overlapping relation, and means for simultaneously rotating the spindles in the same angular direction to open and close the valve leaves.

7. A throttle valve comprising a cylindrical casing, more than two complementary valve leaves, supporting spindles for said leaves disposed centrally of the leaf and radially of the casing, each leaf having a part underlapping a portion of a coacting leaf when the valve is closed and extending downwardly from its spindle when the valve is opened, and means for simultaneously rotating the spindles for opening and closing the valve.

8. A throttle valve comprising a cylindrical casing, more than twocoacting valve leaves mounted in said casing and journaled so that each leaf underlaps a portion of a coacting leaf when the valve is closed and extends downwardly from its axis when the valve is .opened, and means for simultaneously actuating the leaves for opening and closing the valve.

9. A throttle valve comprising a cylindrical tubular casing having an external annular shoulder and wall bearings arranged in the same transverse plane and spaced 9%)", a central support having bearings aligned with said wall hearings, cross pieces connecting said support to the Wall of the casing, an annular gear rotatable on said shoulder, pinion gears journaled in said wall bearings and meshing with said annular gear, valve leaves having spindles journaled at their inner ends in said hearings in said central support and connected at their outer ends to said pinion gears for rotation therewith, the valve leaves being providedrwith offset portions overlapping when the valve is closed, and operating means connected to one of said pinion gears.

10. A throttle valve comprising a cylindrical tubular casing having an external annular shoule der, a central support, an annular gear rotatable on said shoulder, pinion gears journaled in said casing and meshing with said annular gear, valve leaves having spindles journaled at their inner ends in said central support and connected at their outer ends to said pinion gears for rotationtherewith, the valve leaves being provided with offset portions overlapping when the valve is closed, and operating means connected to one of said pinion gears.

11. A throttle valve comprising a cylindrical tubular casing having an external annular shoulder and wall bearings arranged in the same transverse plane and spaced 90, a central sup port, an annular gear rotatable on said shoulder, pinion gears journaled in said wall bearings and meshing with said annular gear, valve leaves having spindles journaledat their inner ends in said central support and connected at their outer ends to said pinion gears for rotation therewith, and operating means connected to one of said pinion gears.

12. A valve comprising a casing, a central support in said casing, a control ring mounted for rotation about said casing, valve leaves having supporting spindles journaled to said central support and said casing, and means at the ends of said spindles and coacting with said control ring so that when the ring is rotated the valve leaves are turned in unison in the same angular direction and to the same angular extent.

13. A throttle valve comprising a cylindrical case having an external annular shoulder and wall bores arranged in the same transverse plane and equally spaced apart, a central support in line with the longitudinal axis or" said case and having bores alined with said wall bores, cross bars connecting said support to the wall of said case, a ring seated on said shoulder for rotation about said case, valve leaves having supporting spindles journaled at their inner ends to the bores in said central support and connected at their outer ends to said ring for rotation thereby, the valve leaves being provided with offset overlapping portions whereby the valve leaves form a disk-like transverse partition when in their closed position, and means connected to one of said spindles for rotating said ring gear to turn said leaves in unison and to the same angular extent whereby a mixing and swirling screw motion is imparted to the fluid traversing said case when the leaves are in partially open position.

LOUIS J. SCHEID. 

